Albert Barnes Commentary 2 Chronicles 24:22

"Thus Joash the king remembered not the kindness which Jehoiada his father had done to him, but slew his son. And when he died, he said, Jehovah look upon it, and require it." — 2 Chronicles 24:22 (ASV)

The Lord look upon it and require it. — Compare Genesis 9:5 and Genesis 42:22; contrast this with the words of Christ (Luke 23:34) and Stephen (Acts 7:60). Zechariah’s prayer was prophetic (see 2 Chronicles 24:23, 25; Luke 11:51).